package  com.kaifamiao.unifyresulth;

import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.SneakyThrows;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;
@Slf4j
@RestControllerAdvice
public class ResponseAdvice implements ResponseBodyAdvice<Object> {
    @Autowired
    private ObjectMapper objectMapper;

    @Override
    public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> aClass) {
        return true;
    }

    @SneakyThrows
    @Override
    public Object beforeBodyWrite(Object o, MethodParameter methodParameter, MediaType mediaType, Class<? extends HttpMessageConverter<?>> aClass, ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {

        log.info("进入返回体，进行包装处理");
        if(o ==null ){
            log.error("object is null");
            return ResultData.fail(ReturnCode.RC250.getCode(),"object is null");
        }
        if(o instanceof String){
            return objectMapper.writeValueAsString(ResultData.success(o));
        }
        if(o instanceof ResultData){
            return o;
        }
        System.out.println(o.getClass());
        return ResultData.success(o);
    }
}